CN218543144U - Tractor sliding gear electric control gear shifting actuating mechanism - Google Patents
Tractor sliding gear electric control gear shifting actuating mechanism Download PDFInfo
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- CN218543144U CN218543144U CN202222964162.XU CN202222964162U CN218543144U CN 218543144 U CN218543144 U CN 218543144U CN 202222964162 U CN202222964162 U CN 202222964162U CN 218543144 U CN218543144 U CN 218543144U
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Abstract
The invention provides an electric control gear shifting actuating mechanism for a sliding gear of a tractor, which belongs to the technical field of agricultural machinery and comprises a gear shifting motor, wherein the output end of the gear shifting motor is connected with a gear shifting lead screw, the gear shifting lead screw is also connected with a gear shifting guide block, the gear shifting guide block is connected with a gear shifting shaft through an elastic cylindrical pin, a shifting head, a first gear shifting spring and a second gear shifting spring are sleeved on the gear shifting shaft in a hollow manner, and the first gear shifting spring and the second gear shifting spring are respectively positioned on the left side and the right side of the shifting head and are in contact with the shifting head; the shifting block is connected with a shifting fork, the shifting fork is connected with a shifting fork shaft, and the output end of the shifting fork is connected with a sliding gear; the device also comprises an angle sensor; according to the invention, through the reliable gear shifting actuating mechanism, the occurrence probability of faults of gear shifting, gear beating, gear engaging failure and the like is reduced, and meanwhile, the abnormal abrasion of the sliding gear is also avoided; in addition, after the electric control gear shifting is adopted, the gear shifting time is shortened, and the accurate control of the gear shifting force is realized.
Description
Technical Field
The invention relates to the technical field of agricultural machinery, in particular to a sliding gear shifting actuating mechanism, and particularly relates to an electric control shifting actuating mechanism for a sliding gear of a tractor.
Background
A transmission system of a traditional medium and small power tractor mostly adopts sliding gears for shifting gears, and is simple in structure and low in cost. Traditional sliding gear gearshift adopts mechanical type gearshift mostly, through gear level location shift fork, and the terminal shifting block of shift fork is fixed a position on sliding gear, through controlling gear level reciprocating motion, drives the shift fork and stirs sliding gear and realize the action of shifting gears. Meanwhile, the positioning of each gear is realized through a steel ball and a spring which are positioned on the shifting fork shaft.
The traditional mechanical gear shifting mechanism shifts gears only by shifting a sliding gear through a shifting fork, and when the teeth of the sliding gear are not aligned with the tooth grooves of a mating gear, the traditional mechanical gear shifting mechanism usually has the phenomenon of gear beating, so that the gear shifting reliability is poor; in addition, in the prior art, manual gear shifting is needed, and the control precision is not high.
Disclosure of Invention
The purpose of the invention is as follows: the invention aims to provide an electric control gear shifting actuating mechanism of a tractor sliding gear, which aims to overcome the defects of the prior art, and through a reliable gear shifting actuating mechanism, the occurrence probability of faults such as gear shifting, gear breaking, gear non-engaging and the like is reduced, and meanwhile, the abnormal abrasion of the sliding gear is also avoided; in addition, after the electric control gear shifting is adopted, the gear shifting time is shortened, and the accurate control of the gear shifting force is realized.
The technical scheme is as follows: the invention relates to an electric control gear shifting executing mechanism for a sliding gear of a tractor, which comprises a gear shifting motor, wherein the output end of the gear shifting motor is connected with a gear shifting lead screw, the gear shifting lead screw is also connected with a gear shifting guide block, the gear shifting guide block is connected with a gear shifting shaft through an elastic cylindrical pin, a shifting head, a first gear shifting spring and a second gear shifting spring are sleeved on the gear shifting shaft in an empty manner, and the first gear shifting spring and the second gear shifting spring are respectively positioned on the left side and the right side of the shifting head and are in contact with the shifting head; the shifting block is connected with a shifting fork, the shifting fork is connected with a shifting fork shaft, and the output end of the shifting fork is connected with a sliding gear;
the gear shifting lead screw is connected with a first sensor pin shaft, the first sensor pin shaft is connected with a first angle sensor, and the first angle sensor detects the stroke of the gear shifting lead screw in real time; the shifting block is also connected with a second sensor pin shaft, the second sensor pin shaft is connected with a second angle sensor, and the second angle sensor detects the position of the shifting block in real time;
the gear shifting motor transmits power to the gear shifting lead screw, the first angle sensor detects the stroke of the gear shifting lead screw in real time through the first sensor pin shaft, the gear shifting lead screw pushes the gear shifting guide block to move left and right, the gear shifting guide block drives the gear shifting shaft to move left and right, the first gear shifting spring and the second gear shifting spring which move left and right are pushed to push the shifting block to move left and right, the second angle sensor detects the position of the shifting block in real time through the second sensor pin shaft, the shifting block pushes the shifting fork to move left and right, and the shifting fork pushes the sliding gear to move left and right.
Furthermore, one end of the shifting fork is connected with the shifting fork shaft through an elastic cylindrical pin.
Furthermore, the other end of the shifting fork is connected with a shifting block, and the shifting block is inserted into a rotary groove of the sliding gear.
Further, the gear shifting lead screw is connected with the first sensor pin shaft through the first round table.
Furthermore, the shifting block is connected with a second sensor pin shaft through a second round table.
Furthermore, a shaft shoulder is arranged on the gear shifting shaft, one end, far away from the shifting block, of the second gear shifting spring is in contact with the shaft shoulder, and the shaft shoulder is used for positioning the spring.
Has the beneficial effects that: compared with the prior art, the invention has the advantages that:
(1) When the teeth of the sliding gear are not aligned with the tooth grooves of the mating gear, the problem of gear beating often occurs in the traditional mechanical gear shifting mechanism, and the gear shifting mechanism is provided with a gear shifting motor, a gear shifting lead screw, a gear shifting guide block, a gear shifting shaft, a shifting head and two gear shifting springs which are mutually cooperated to form a reliable gear shifting execution mechanism, so that the occurrence probability of gear shifting, gear beating, gear hanging failure and other faults is reduced, and meanwhile, the abnormal abrasion of the sliding gear is avoided;
(2) Aiming at the problems that manual gear shifting is needed in the prior art and the control precision is low, the gear-shifting mechanism is provided with the first angle sensor and the second angle sensor, so that the stroke of the gear-shifting screw rod can be detected in real time, the position of the shifting block can be detected in real time, closed-loop control is realized, and the control precision is improved;
(3) The gear shifting mechanism is compact in structure, and the gear shifting motor is adopted to electrically control gear shifting, so that the gear shifting time is shortened, and the accurate control of the gear shifting force is realized.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a top view of the present invention;
FIG. 3 isbase:Sub>A cross-sectional view taken along line A-A of FIG. 2;
fig. 4 is a schematic representation of the connection of the shift screw (2) and the first sensor pin (3) via the first circular table;
fig. 5 is a diagram illustrating the connection between the dial (5) and the second sensor pin (9) through the second round table.
Detailed Description
The technical solution of the present invention is described in detail below with reference to the accompanying drawings, but the scope of the present invention is not limited to the embodiments.
As shown in fig. 1, the tractor sliding gear electric control gear shifting actuating mechanism comprises a gear shifting motor 1, wherein an output end of the gear shifting motor is connected with a gear shifting lead screw 2, the gear shifting lead screw 2 is also connected with a gear shifting guide block 13, the gear shifting guide block 13 is connected with a gear shifting shaft 6 through an elastic cylindrical pin 15, a shifting block 5, a first gear shifting spring 12 and a second gear shifting spring 14 are sleeved on the gear shifting shaft 6 in an empty manner, and the first gear shifting spring 12 and the second gear shifting spring 14 are respectively positioned on the left side and the right side of the shifting block 5 and are in contact with the shifting block; the shifting block 5 is connected with a shifting fork 10, the shifting fork 10 is connected with a shifting fork shaft 7, and the output end of the shifting fork 10 is connected with a sliding gear 11;
the gear shifting lead screw 2 is connected with a first sensor pin shaft 3, the first sensor pin shaft 3 is connected with a first angle sensor 4, and the first angle sensor detects the stroke of the gear shifting lead screw 2 in real time; the shifting block 5 is also connected with a second sensor pin shaft 9, the second sensor pin shaft 9 is connected with a second angle sensor 8, and the second angle sensor 8 detects the position of the shifting block 5 in real time; the angle sensor can be a 45-degree angle sensor which is used for the Nippon fat.
One end of the shifting fork 10 is connected with the shifting fork shaft 7 through an elastic cylindrical pin 15. The other end of the shifting fork 10 is provided with a shifting block which is inserted into a rotary groove of the sliding gear 11. The gear shifting lead screw 2 is connected with the first sensor pin shaft 3 through a first round table. The shifting block 5 is connected with a second sensor pin shaft 9 through a second round table. A shoulder is arranged on the gear shift shaft 6, and one end of the second gear shift spring 14, which is far away from the shifting block, is in contact with the shoulder.
The working principle is as follows:
the gear shifting motor 1 transmits power to the gear shifting lead screw 2, the first angle sensor 4 detects the stroke of the gear shifting lead screw 2 in real time through the first sensor pin shaft 3, the gear shifting lead screw 2 pushes the gear shifting guide block 13 to move left and right, the gear shifting guide block 13 drives the gear shifting shaft 6 to move left and right, the first gear shifting spring 12 and the second gear shifting spring 14 are pushed to move left and right simultaneously, the first gear shifting spring 12 and the second gear shifting spring 14 push the shifting block 5 to move left and right, the second angle sensor 8 detects the position of the shifting block 5 in real time through the second sensor pin shaft 9, the shifting block 5 pushes the shifting fork 10 to move left and right, and the shifting fork 10 pushes the sliding gear 11 to move left and right.
During gear shifting, when the sliding gear 11 needs to be engaged into a left gear, the gear shifting motor 1 rotates to drive the gear shifting lead screw 2 to move to the left, the gear shifting lead screw 2 pushes the gear shifting guide block 13 to move to the left, the gear shifting guide block 13 drives the gear shifting shaft 6 to move to the left, a shaft shoulder on the gear shifting shaft 6 pushes the second gear shifting spring 14 to move to the left, the second gear shifting spring 14 pushes the shifting block 5 to move to the left, the shifting block 5 pushes the shifting fork 10 to move to the left, and the shifting fork 10 pushes the sliding gear 11 to move to the left, so that the purpose of gear shifting is achieved.
The above shift process is a process of completing a shift when the teeth of the sliding gear 11 are exactly aligned with the tooth grooves of the mating gear thereof, and is an ideal shift process. When the teeth of the sliding gear 11 are not aligned with the tooth grooves of its mating gear, the conventional mechanical shifting mechanism tends to suffer from tooth breakage.
Specifically, when the teeth of the sliding gear 11 are not aligned with the tooth grooves of the mating gear, the shifting motor 1 rotates to drive the shifting screw 2 to move to the left, the shifting screw 2 drives the shifting guide 13 to move to the left, the shifting guide 13 drives the shifting shaft 6 to move to the left, the shoulder on the shifting shaft 6 drives the second shifting spring 14 to move to the left, when the second shifting spring 14 drives the dial 5 to move to the left, the sliding gear 11 cannot move to the left because the sliding gear 11 is not aligned with the tooth grooves of the mating gear, the 10-shift fork cannot move to the left, the dial 5 cannot move to the left, at this time, the second shifting spring 14 is compressed, the elastic force generated by the compression of the second shifting spring 14 continuously acts on the dial 5, the dial 5 gives a leftward pushing force to the shift fork 10, and when the sliding gear 11 rotates relative to the mating gear, the elastic force generated by the compression of the second shifting spring 14 pushes the sliding gear 11 to move to the left to engage the target gear.
As noted above, while the present invention has been shown and described with reference to certain preferred embodiments, it is not to be construed as limited thereto. Various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (6)
1. The utility model provides a tractor sliding gear automatically controlled actuating mechanism that shifts which characterized in that: the gear shifting mechanism comprises a gear shifting motor (1), wherein the output end of the gear shifting motor is connected with a gear shifting lead screw (2), the gear shifting lead screw (2) is also connected with a gear shifting guide block (13), the gear shifting guide block (13) is connected with a gear shifting shaft (6) through an elastic cylindrical pin (15), a shifting head (5), a first gear shifting spring (12) and a second gear shifting spring (14) are sleeved on the gear shifting shaft (6) in an empty mode, and the first gear shifting spring (12) and the second gear shifting spring (14) are respectively located on the left side and the right side of the shifting head (5) and are in contact with the shifting head; the shifting block (5) is connected with a shifting fork (10), the shifting fork (10) is connected with a shifting fork shaft (7), and the output end of the shifting fork (10) is connected with a sliding gear (11);
the gear shifting lead screw (2) is connected with a first sensor pin shaft (3), the first sensor pin shaft (3) is connected with a first angle sensor (4), and the first angle sensor detects the stroke of the gear shifting lead screw (2) in real time; the shifting block (5) is further connected with a second sensor pin shaft (9), the second sensor pin shaft (9) is connected with a second angle sensor (8), and the second angle sensor (8) detects the position of the shifting block (5) in real time.
2. The tractor sliding gear electric control gear shifting actuating mechanism according to claim 1, characterized in that: one end of the shifting fork (10) is connected with the shifting fork shaft (7) through another elastic cylindrical pin.
3. The tractor sliding gear electric control gear shifting actuating mechanism according to claim 2, characterized in that: the other end of the shifting fork (10) is provided with a shifting block, and the shifting block is inserted into a rotary groove of the sliding gear (11).
4. The tractor sliding gear electric control gear shifting actuating mechanism according to claim 1, characterized in that: the gear shifting lead screw (2) is connected with the first sensor pin shaft (3) through the first round table (16-1).
5. The tractor sliding gear electric control gear shifting actuating mechanism according to claim 1, characterized in that: the shifting head (5) is connected with a second sensor pin shaft (9) through a second round table (16-2).
6. The tractor sliding gear electric control gear shifting actuating mechanism according to claim 1, characterized in that: the gear shifting shaft (6) is provided with a shaft shoulder, and one end, far away from the shifting block, of the second gear shifting spring (14) is in contact with the shaft shoulder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222964162.XU CN218543144U (en) | 2022-11-08 | 2022-11-08 | Tractor sliding gear electric control gear shifting actuating mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222964162.XU CN218543144U (en) | 2022-11-08 | 2022-11-08 | Tractor sliding gear electric control gear shifting actuating mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218543144U true CN218543144U (en) | 2023-02-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222964162.XU Active CN218543144U (en) | 2022-11-08 | 2022-11-08 | Tractor sliding gear electric control gear shifting actuating mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218543144U (en) |
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2022
- 2022-11-08 CN CN202222964162.XU patent/CN218543144U/en active Active
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